I too think an official list would be better. Maybe you can contact an admin about it, or make one now and ask for their blessing :)
I'll PM /u/teamsnapzu and see what they think.
Besides /t/recruitment and /t/newtribes, what other Snapzu related tribes are there that should be noted of?
/t/ideasforsnapzu (if anyone wants to post suggestions or ideas for the admins)